"The basic idea of classical chiropractic is that "subluxations" are the cause of most medical problems. According to classical chiropractic, a 'subluxation' is a misalignment of the spine that allegedly interferes with nerve signals from the brain. However, there is no scientific evidence for spinal subluxations and none have ever been observed by medical practitioners such as orthopedic surgeons, neurosurgeons, or radiologists."

I'm on the skeptical side of this issue. Last winter, for example, I had some real severe back pain for a week or so. I put up with it and tried to stretch as much as I could. Then one morning I woke up and my back was fine.If I'd gone to a chiropractor, I would have handed over a lot of dough and then one morning I would have awakened and my back would have been fine. But I'd have been out a lot of dough.
So I offer this link for your perusal. I invite you to put it in your favorites.